{ "response": { "Key": "IAD-SEL", "orig": { "code": "IAD", "type": "airport", "city": "Washington", "fullCity": "Washington, United States", "airport": "Washington Intl Airport" }, "dest": { "code": "SEL", "type": "airport", "city": "Seoul", "fullCity": "Seoul, Korea", "airport": "Incheon Intl Airport" }, "faq": { "q0": { "question": "What is the typical flight duration from Washington to Seoul?", "answer": "The nonstop flight from Washington Dulles to Seoul Incheon is about 6,940 miles and typically takes 15 hours and 25 minutes, with Korean Air and Air Premia operating the route. The return leg is noticeably faster at 13 hours and 50 minutes, a difference of 1 hour and 35 minutes due to prevailing winds.", "methodology": "Flight times and distances come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). The typical flight time is the median scheduled block time across all carriers on the route, computed the same way in both directions so the difference reflects prevailing winds rather than any change in method. Distance is the great-circle distance between the two airports, so the actual flown track is typically 2-5% longer.", "toolsUsed": [ "flight_schedule" ] }, "q1": { "question": "Are there any direct flights from Washington to Seoul?", "answer": "Yes, Korean Air and Air Premia both fly nonstop from Washington Dulles (IAD) to Seoul Incheon (ICN). Korean Air operates daily with multiple departures, while Air Premia flies four days a week — Monday, Wednesday, Friday, and Sunday. The nonstop flight takes about 15 hours 25 minutes, with typical fares around $1,584 on Korean Air.", "methodology": "Airlines and weekly frequencies are compiled from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a median fare is shown for a carrier, it reflects the real fares Priceline users found on this route in the last 72 hours. Carrier service, flight times and distances for this route come from our flight-schedule database, which draws on published airline timetables, U.S. government schedule data, and observed operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We report the days of the week and the departure times each carrier operates. The typical flight time is the median scheduled block time, given both per carrier and across all carriers on the route; where a schedule does not publish an elapsed time, it is derived from the scheduled departure and arrival times converted to UTC. Outbound and return times are computed by the same method, so the difference between them is directly comparable and reflects prevailing winds rather than any change in derivation. Distance is the great-circle distance between the two specific airports named, so an actual flown track is typically 2-5% longer. Where shown, on-time departure and arrival rates and cancellation rates come from the U.S. Bureau of Transportation Statistics (BTS) Airline On-Time Performance dataset, which covers U.S. domestic routes only; where a typical fare is shown, it comes from the U.S. DOT Airline Origin and Destination Survey (DB1B), a quarterly 10% sample of tickets sold. Red-eye flights are identified from scheduled local departure and arrival times in our flight-schedule database — built from published airline timetables and official schedule data, including U.S. Department of Transportation records for domestic routes — flagging services that depart late at night and arrive the following morning; for connecting itineraries the red-eye is based on the timing of the overnight long-haul leg. Stop counts, connecting hubs, and per-airline prices are drawn from a large sample of the real fares Priceline users found on this route in the last 72 hours. We group those fares by number of stops, by the hub airport a connection routes through, and by operating airline, and report each group's share of the sample alongside its lowest and median price.", "toolsUsed": [ "route_airlines", "flight_schedule", "redeye_flights", "route_options" ] }, "q3": { "question": "What are the ground transportation options in Seoul?", "answer": "From Incheon International Airport, the fastest and most-used way into Seoul is the Airport Railroad (AREX) express train, which reaches Seoul Station in about 45 minutes. All-stop commuter trains are also available and cost less. Airport limousine buses serve many districts and hotels directly, with fares around ₩17,000–18,000, and you can pay with a card or buy a ticket at the airport. Taxis and rental cars are available at the terminals, but traffic can make them slower than rail. Ride-share apps operate in Seoul, though local taxi-hailing apps are more common.", "toolsUsed": [], "references": [ { "url": "https://airport.kr/bbs/ap_en/937/138233/artclView.do", "title": "K2Web Wizard", "time_published": "2024-10-16T00:00:00Z" }, { "url": "https://www.airport.kr/ap_en/1507/subview.do", "title": "International Incheon Airport" }, { "url": "https://en.wikipedia.org/wiki/Transportation_in_Seoul", "title": "Transportation in Seoul", "time_published": "2025-09-22T07:17:16Z" }, { "url": "https://en.wikipedia.org/wiki/Incheon%20International%20Airport%20Terminal%201%20station", "title": "Incheon International Airport Terminal 1 station", "time_published": "2026-03-08T09:10:35Z" }, { "url": "https://airport.kr/ap_en/6604/subview.do", "title": "International Incheon Airport" } ] }, "q6": { "question": "Are overnight (red‑eye) flights available from Washington to Seoul?", "answer": "No nonstop red-eye flights operate from Washington Dulles to Seoul, but connecting itineraries whose long leg is an overnight red-eye are available. For example, United offers a connection via San Francisco where the overnight leg SFO→ICN departs at 11:55 PM and arrives at 4:20 AM (early hours), and Asiana offers similar red-eye legs via Los Angeles (departing 11:00 PM, arriving 4:00 AM) or San Francisco (departing 11:20 PM, arriving 4:05 AM).", "methodology": "Red-eye flights are identified from scheduled local departure and arrival times in our flight-schedule database — built from published airline timetables and official schedule data, including U.S. Department of Transportation records for domestic routes — flagging services that depart late at night and arrive the following morning; for connecting itineraries the red-eye is based on the timing of the overnight long-haul leg.", "toolsUsed": [ "redeye_flights" ] }, "q7": { "question": "Which airlines usually operate this route from Washington to Seoul?", "answer": "Korean Air and Air Premia fly nonstop from Washington Dulles to Seoul Incheon. Korean Air operates 28 weekly flights, with departures throughout the day, and a typical median fare around $1,584. Air Premia offers 8 weekly flights on Monday, Wednesday, Friday, and Sunday. These are the primary carriers on the route, though other airlines may offer connecting options.", "methodology": "Airlines and weekly frequencies come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a typical fare is shown for a carrier, it is the median of the real fares Priceline users found on this route in the last 72 hours.", "toolsUsed": [ "route_airlines" ] }, "q8": { "question": "If I need a connection, what are common layover cities between Washington and Seoul?", "answer": "Common layover hubs include Tokyo (Narita or Haneda), Incheon (a short hop from Seoul), Beijing, and Istanbul. Tokyo offers broad Asia connections and efficient transfers; Incheon is Seoul’s main international gateway with seamless domestic links; Beijing provides competitive total travel times; Istanbul offers visa‑free transit for many nationalities and one‑stop access from Washington." }, "q10": { "question": "Which months have the best weather for traveling to Seoul?", "answer": "April to June and September to October offer mild temperatures, low rainfall, and fewer tourists." }, "q11": { "question": "What documents should I bring with me to the airport when flying from Washington to Seoul?", "answer": "Bring a passport valid for at least six months, any required visa or K-ETA, proof of onward or return travel, a payment method for baggage and any necessary vaccination or insurance documents." }, "q12": { "question": "Which airport should I use in Seoul?", "answer": "Incheon is Seoul's main international airport, offering the most flights and connections. Gimpo serves domestic and short-haul regional routes and is closer to downtown." }, "q14": { "question": "Are there hotels or sleeping facilities at Seoul airport?", "answer": "Seoul Incheon Airport (ICN) has the Incheon Airport Transit Hotel located airside on the 4th floor of Terminal 1, offering rooms in 6-hour blocks—no shuttle needed since it's inside the terminal. Terminal 2 features designated Nap/Rest Zones with reclined loungers and semi-private spaces near Gates 262–268, plus wide, armrest-free benches landside on Level 1 that many travelers find comfortable for sleeping. There are no capsule hotels or sleeping pods, but the airside rest zones and the transit hotel provide solid options for a restful layover.", "toolsUsed": [], "references": [ { "url": "https://www.sleepinginairports.net/guides/seoul-incheon-airport-guide.htm", "title": "Seoul Incheon Airport Guide (ICN) - Sleeping in Airports", "favicon": "https://www.sleepinginairports.net/nitropack_static/oBWrHkPujHTPIaVWqdDSDhClXUyrYhhb/assets/images/optimized/rev-b853180/www.sleepinginairports.net/wp-content/uploads/2018/09/cropped-sia-logo-180x180.png", "time_published": "2018-10-02T00:00:42Z" }, { "url": "https://www.walkerhill.com/transithotel/customer/FAQ", "title": "Incheon Airport Transit Hotel", "time_published": "2022-06-13T00:00:00Z" }, { "url": "http://www.sleepinginairports.net/asia/seoul.htm", "title": "Seoul Incheon Airport Guide (ICN) - Sleeping in Airports", "time_published": "2026-04-13T17:34:21Z" }, { "url": "https://www.walkerhill.com/transithotel/en/t1/about/Introduction.jsp", "title": "Incheon Airport Transit Hotel", "time_published": "2022-06-13T00:00:00Z" }, { "url": "https://all.accor.com/a/en/destination/city/hotels-seoul-v5556.html", "title": "Hotels in Seoul | Accor ALL.com", "time_published": "2025-01-20T00:00:00Z" }, { "url": "https://www.walkerhill.com/transithotel/m/en/t1/about/Introduction.jsp", "title": "Incheon Airport Transit Hotel", "time_published": "2022-06-13T00:00:00Z" } ] }, "q15": { "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at Incheon Intl Airport?", "answer": "Incheon International Airport (ICN) offers currency exchange and ATM services in both terminals, including banks and kiosks located in the public departures area on the 3rd floor before security. Prayer rooms are available in the duty‑free zones of Terminal 1 and Terminal 2, with additional multi‑faith chapels in Terminal 1. Free Wi‑Fi is provided throughout the airport, with no time limit or password required; simply connect to the 'AirportWiFi' network. Specific terminal locations can be confirmed via the airport’s information desks, which are located on the 3rd floor departures level and 1st floor arrivals level in both terminals.", "toolsUsed": [], "references": [ { "url": "https://airport.kr/ap_en/1562/subview.do", "title": "International Incheon Airport" }, { "url": "https://airport.kr/ap_en/1542/subview.do", "title": "International Incheon Airport", "time_published": "1999-01-01T00:00:00Z" }, { "url": "https://en.wikipedia.org/wiki/Incheon%20International%20Airport", "title": "Incheon International Airport", "time_published": "2026-04-30T15:03:57Z" }, { "url": "https://en.wikipedia.org/wiki/File:Incheon_International_Airport_Interior.jpg", "time_published": "2013-06-13T00:00:00Z" }, { "url": "https://airport.kr/ap_en/1413/subview.do", "title": "International Incheon Airport" } ] }, "q16": { "question": "Are there accessible services or children's facilities at the Washington and Seoul airports?", "answer": "Washington Dulles offers wheelchair assistance and other disability services through airlines (request at least 48 hours before travel), with an ADA coordinator available for accessibility concerns. Incheon Airport provides priority lanes for elderly, disabled, and pregnant travelers, plus free electric vehicle and wheelchair transport between parking and terminals (contact 1577-2600 or use help phones). While Incheon has dedicated services for young children, specific children's play areas aren't detailed in the available information for either airport.", "toolsUsed": [], "references": [ { "url": "https://www.flydulles.com/", "title": "Official Website of Washington Dulles International Airport - IAD", "favicon": "https://www.flydulles.com/themes/custom/mwaa_barrio/favicon.ico", "time_published": "2026-07-17T00:00:00Z" }, { "url": "https://www.flydulles.com/customer-service/disability-services", "title": "flydulles.com - Disability Services", "favicon": "https://www.flydulles.com/themes/custom/mwaa_barrio/favicon.ico" }, { "url": "https://www.mwaa.com/policies-regulations/civil-rights-patrons/ada-rehab-act-notice", "title": "mwaa.com - ADA Rehab Act Notice", "time_published": "2021-08-01T00:00:00Z" }, { "url": "https://en.wikipedia.org/wiki/Assistance%20for%20airline%20passengers%20with%20disabilities", "title": "Assistance for airline passengers with disabilities", "time_published": "2025-09-29T17:44:25Z" }, { "url": "https://www.mwaa.com/policefireems/fire-ems/fire-ems-washington-dulles-international-airport", "title": "mwaa.com - Fire & EMS at Washington Dulles International Airport", "favicon": "https://www.mwaa.com/themes/custom/mwaa_barrio/favicon.ico", "time_published": "2023-09-01T00:00:00Z" }, { "url": "https://www.airport.kr/ap_en/1435/subview.do", "title": "International Incheon Airport" }, { "url": "https://airport.kr/ap_en/1478/subview.do", "title": "International Incheon Airport", "favicon": "https://airport.kr/Web-home/og/images/apple-touch-icon.png" }, { "url": "https://en.wikipedia.org/wiki/Incheon_International_Airport_Corporation", "title": "Incheon International Airport Corporation", "time_published": "2026-06-15T21:57:36Z" }, { "url": "https://en.wikipedia.org/wiki/Incheon_International_Airport_Terminal_2_station", "title": "Incheon International Airport Terminal 2 station", "time_published": "2026-07-03T06:56:11Z" }, { "url": "https://airport.kr/ap_en/1562/subview.do", "title": "International Incheon Airport" } ] }, "q17": { "question": "What aircraft are typically used on flights from Washington to Seoul?", "answer": "On the direct flight from Washington Dulles to Seoul, Korean Air typically uses a Boeing 777-300ER. Connecting itineraries often feature a Boeing 787-9 or Airbus A350-900 on the long transpacific leg, operated by airlines like United, American, or Asiana, with a variety of narrow-body aircraft on the domestic feeder segments. The exact aircraft can vary by day and airline, and Wi-Fi and seatback entertainment are widely available on these long-haul flights.", "methodology": "Aircraft types are taken from the equipment each operating carrier schedules on this route, drawn from published airline timetables and airline equipment schedules in our flight-schedule database. They describe typical scheduled aircraft and can vary with seasonal or day-of-week assignments and last-minute equipment swaps.", "toolsUsed": [ "route_aircraft" ] }, "q20": { "question": "What are the best airport lounge options when departing from Washington?", "answer": "At Washington Dulles, the airline-branded lounges in Concourse A include the Virgin Atlantic Clubhouse, the Etihad Airways Lounge (also operating as the Chase Sapphire Lounge by The Club), and the Air France/KLM Lounge; Concourse B has the Turkish Airlines Lounge, while the Lufthansa Business and Senator Lounges there are temporarily closed. The Capital One Lounge is a prominent independent option located near the TSA checkpoints, offering all-inclusive food and drink, workspaces, and grab-and-go items, with daily hours from 5:30 am to 9:00 pm. Access to the Virgin Atlantic Clubhouse is typically for Upper Class passengers and Flying Club Gold members, while the Etihad/Chase Sapphire Lounge welcomes business-class travelers and Priority Pass members. The Air France/KLM Lounge admits business-class passengers and Flying Blue elites, though access is restricted between 3:00 pm and 8:00 pm daily. The Turkish Airlines Lounge is open to business-class passengers and Star Alliance Gold members, and the Capital One Lounge is available to Venture X and Venture X Business cardholders, with day passes sometimes offered for a fee.", "toolsUsed": [], "references": [ { "url": "https://americanexpress.com/en-us/travel/lounges/the-platinum-card/IAD", "title": "American Express Lounges at Washington Dulles International Airport | Amex US", "time_published": "2026-01-01T00:00:00Z" }, { "url": "https://prioritypass.com/en-GB/lounges/united-states-of-america/washington-dulles-international", "title": "Washington Dulles International Airport IAD Lounges - IAD Airport Guide and lounges. | Priority Pass", "time_published": "2024-11-05T00:00:00Z" }, { "url": "https://americanexpress.com/en-th/travel/lounges/the-platinum-card/IAD", "title": "American Express Lounges at Washington Dulles International Airport | Amex TH", "time_published": "2026-01-01T00:00:00Z" }, { "url": "https://www.flydulles.com/travel-information/services-amenities/airport-lounges/capital-one-lounge-iad", "title": "Capital One Lounge - IAD | flydulles.com", "time_published": "2022-03-01T00:00:00Z" }, { "url": "https://my.prioritypass.com/zh-CN/lounges/united-states-of-america/washington-dulles-international/iad6-air-france-klm-lounge", "title": "Air France - KLM Lounge IAD AIRPORT A 大厅 杜勒斯国际机场 (Washington DC Dulles Intl) | Priority Pass", "time_published": "2024-11-05T00:00:00Z" } ] }, "q21": { "question": "What is the baggage allowance on this route from Washington to Seoul?", "answer": "Baggage rules for Washington to Seoul depend on the airline and fare. Basic economy often excludes checked bags, while standard international economy usually includes one checked bag and a carry‑on. Premium cabins offer more generous allowances." }, "q22": { "question": "What cabin and seat options are typical from Washington to Seoul?", "answer": "Flights from Washington to Seoul commonly offer Economy and flat‑bed Business class, with Premium Economy available on select carriers like Korean Air." }, "q23": { "question": "Are same‑day changes or standby possible on this route?", "answer": "Policies differ by airline and fare; flexible and premium tickets usually allow same‑day changes or standby, while Basic Economy generally does not." } } } }